Add role descriptions for (super) org admins
Add role descriptions for (super) org admins

For: https://trello.com/c/GwkV3LWw/262-super-org-admin-tweaks

This will add a description under the role dropdown on the edit user page. It describes what org admins and super org admins can do.

alphagov/signonotron2,alphagov/signonotron2,alphagov/signonotron2,alphagov/signonotron2